关键词: 30CrMnTi钢, 产品开发, 工艺控制,

Abstract: By 120 t BOF-LF-180 mm x 180 mm continuous casting billet-wire rod rolling process ,30CrMnTi steel wire rod (/%：0. 26 ~0.27C,0.84 ~0.86Mn,1.07 ~ 1.08Cr, 0.055 - 0. 066Ti) is successfully developed. By using the process measures including feeding aluminum wire in LF earlier period and calcium wire in later period, controlling refining slag basicity 5 ~ 6, and superheat degree of molten steel in tundish 20 ~ 40 °C , and control rolling-cooling process with finishing temperature 890 ℃ , the results show that the ϕ6. 5 mm wire rod [O] (15 ~ 16) x 10-6 , [N] (45 ~58) x 10-6, D fine rating 0. 5 ~ 1. 0, others rating 0 ~ 0. 5 , average tensile strength 706 MPa and reduction of area 72% , HRB hardness value ≤90 and depth of decarburization < 1.0% D, the indicators fully meet customer requirements.